LH1550
LH1550 is HIGH VOLTAGE/ SOLID STATE RELAY OPTOCOUPLER manufactured by Siemens Semiconductor Group.
FEATURES
- Normally Open, Single Pole Single Throw Operation
- Control 350 VAC or DC Voltage
- Switch 100 m A Loads
- LED Control Current, 2.5 m A
- Low ON-Resistance, 37 Ω Typ. at 100 m A
- Isolation Test Voltage, 3750 VACRMS
- Current Limit Protection
- Underwriters Lab File # E52744 APPLICATIONS
- Telephone Switch Hook
- High Voltage Test Equipment
- TRIAC Driver
- Motor Control
- Industrial Control Systems DESCRIPTION
The LH1550 is a single pole single throw (SPST), normally open (NO), solid state relay. The relay can control AC or DC loads currents up to 100 m A, with a supply voltage up to 350 V. The device is packaged in a six pin 0.3 inch dualin line package. This package offers an insulation dielectric withstand of 3750 VRMS. The coupler consists of a Al Ga As LED that is optically coupled to a dielectrically isolated photodiode array which drives two series connected high voltage MOS transistors. The typical ON-Resistance is 37 Ω at 25 m A and is linear up to 50 m A. There is built-in current limiting circuitry in the detector chip, enabling it to pass FCC 68-302 and other regulatory voltage surge requirements when over voltage protection is provided.
Package Dimensions in Inches (mm)
Pin One ID. 3 .248 (6.30) .256 (6.50) 4 5 6
1 2
6 5
S NC
.335 (8.50) .343 (8.70) .039 (1.00) Min. 4° Typ. .018 (0.45) .022 (0.55)
S'
.300 (7.62) Typ. .130 (3.30) .150 (3.81) 18° Typ. .020 (.051) Min. .031 (0.80) .035 (0.90) .100 (2.54) Typ. .010 (.25) .014 (.35) .300 (7.62) .347 (8.82) .110 (2.79) .150 (3.81)
Absolute Maximum Ratings (TA=25°C) Emitter Reverse Voltage 5.0 V Continuous Forward Current 50 m A Peak Forward Current (1 µs) 1 A Power Dissipation 100 m W Derate Linearly from 25°C 1.3 m W/°C...
